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Spirometer
Patent for a spirometer. Illustartion included.
Date:
August 16, 1904
Creator:
Lyttleton, Henry Thomas
System:
The Portal to Texas History
Improved Bedstead-Fastening
Patent for improvements in the mode of fastening the rail to the post of bedsteads.
Date:
August 16, 1870
Creator:
Maulding, Pres.
System:
The Portal to Texas History